Cybersecurity Startups

Raid AI provides real-time deepfake detection across audio, image, and video for enterprises, protecting meetings, calls, and communications through multimodal AI analysis with 98% accuracy and sub-50ms latency. The platform serves financial institutions, contact centers, government agencies, and media organizations, with support for 100+ languages and zero-retention privacy architecture.

1 investor

Rainbow Secure develops authentication and cybersecurity solutions using color-based multi-factor authentication technology to reduce user burden while strengthening security against cyber attacks and credential breaches. The company also works on biometric solutions and provides security integration services for businesses on cloud platforms.

1 investor

Rambus provides silicon intellectual property components including memory interface controllers and cryptographic security processors for semiconductors and IoT devices. The company specializes in DDR memory solutions, Root of Trust security engines, and hardware cryptographic accelerators serving data center, automotive, and embedded system markets.

1 investor

RANDAEMON develops post-quantum cryptography solutions, including AIRBARN™ stream ciphers and quantum random number generators (QRNGs), for securing internet-connected devices, cloud operations, and IoT systems against quantum computing threats. The company produces both software implementations and chip-embedded prototypes for various applications including voice/video encoding, banking, and blockchain security.

1 investor

Raon is a South Korean IT group that develops AI-based security and authentication platforms, including biometric and simple authentication solutions. It operates multiple affiliates such as RaonSecure, RaonMeta, and RaonVentures serving global security and identity verification needs.

1 investor

RaonSecure develops AI-driven security and authentication technology, including FIDO biometric authentication, blockchain-based decentralized ID (DID), deepfake detection, mobile device management, and identity verification for financial institutions, public agencies, and enterprises. Based in South Korea, it builds Korea's mobile ID system and offers a lineup of Agentic AI security platforms serving 1,000+ domestic and international clients.

1 investor

RaptorX is a cybersecurity platform built as a security data lake that combines AI and big-data architecture for threat hunting and detection. It offers endpoint, network, and extended detection and response modules along with log observability for security teams defending against advanced cyber attacks.

1 investor

Rarimo provides privacy-preserving identity verification — KYC, screening, age and document checks — using zero-knowledge proofs that run on the user's phone so personal data never leaves the device and no data is stored. It offers on-device biometrics and onchain registries that record proofs without holding personal information.

1 investor

RavenMail is an AI-native email security product that uses an LLM engine to analyze context, intent, and identity signals, detecting phishing, impersonation, business email compromise, and data leaks that rules-based filters miss. It integrates with Microsoft 365 and Google Workspace via API and serves enterprise customers across fintech, telecommunications, and other sectors.

1 investor

RAYVN is a digital platform for emergency preparedness and critical event management that enables coordination among emergency response teams during crisis situations.

1 investor

Realaml provides AI-powered, pay-per-use identity verification tools for KYC/AML compliance, including document verification, biometric liveness checks, address verification, and PEP/sanctions screening across more than 30 countries. It serves compliance and onboarding teams at businesses such as cryptocurrency exchanges, finance providers, and real estate firms, with a focus on DIA compliance in New Zealand.

1 investor

Realeyes builds Vision AI for human verification, offering face verification, age estimation and deepfake detection models delivered via an SDK. It serves large enterprises and consumer apps, drawing on a GDPR-compliant dataset of over 18 million webcam sessions, and operates globally from a European headquarters.

1 investor

Realm Labs develops a technique called Deep Neural Inspection to detect and prevent malicious behavior in large language models by reading their internal mathematical representations. The company serves enterprises deploying AI systems that require security oversight and accountability.

1 investor

RealmOne provides advanced analytics, cybersecurity, and data science solutions for national security and defense, serving U.S. government and defense institutions. The company specializes in data mining, predictive modeling, machine learning, and statistical analysis for mission-critical decision-making.

1 investor

Recheck provides a trust and compliance platform for the residential solar industry, offering verified identity verification, certified representative credentials, risk signal sharing, and license compliance management on a shared network.

1 investor

Recurrent Research is a technical AI safety lab focused on data poisoning research, model organisms of misalignment, and red-teaming of data systems, aimed at the security and safety risks that grow as AI development becomes more automated. It works with frontier labs, nonprofits, and government organizations to study and mitigate risks from recursive self-improvement.

1 investor

Red Belly Blockchain is a blockchain that uses an accountability-based consensus algorithm to detect and penalize participants who attempt to double-spend, reducing that common failure in cryptocurrencies. It operates its own native cryptocurrency, the Redbelly Coin (RBC), and an associated wallet for managing crypto assets.

1 investor

RedPill provides a privacy-focused AI gateway that routes requests to private GPU models running inside trusted execution environments (TEEs), returning signed receipts, attestation reports, and audit evidence. It offers developers an OpenAI-compatible API aggregating models across networks like Phala, Tinfoil, and NEAR AI, serving regulated industries such as law firms, healthcare, and security companies.

1 investor

An Australian cybersecurity firm providing security assessments, IRAP assessments, security documentation, training, and consulting for government, defence, and private sector organisations. It offers ASD-endorsed sovereign IRAP training and AI-powered tools for assessing systems against Australia's Information Security Manual (ISM).

1 investor

Redacto provides data redaction and privacy protection for sensitive information such as customer KYC, transaction records, patient data, and clinical trial data. It serves regulated industries including banking and financial services, healthcare and pharma, e-commerce, manufacturing, and travel.

1 investor

Redblock builds agentic AI that automatically executes identity and access management actions—such as joiner/mover/leaver lifecycle changes, account aggregation, and access revocation—inside business applications that don't integrate with existing IAM systems. It targets enterprise security teams, extending IGA, IdP, PAM, and ITSM stacks to cover disconnected applications without custom connector projects.

1 investor

Redcoat AI provides a cybersecurity platform focused on defending organizations against AI-driven social engineering attacks such as phishing, smishing, and deepfake impersonation. It offers red-teaming simulations, vulnerability assessments, and a mobile defense app for enterprise security teams.

1 investor

Redhorse is a federal consulting firm delivering mission-ready technology solutions and services to the U.S. Department of Defense, Intelligence Community, and federal civilian agencies. The company provides consulting, cyber analytics, enterprise services, and national security-focused technology solutions for government customers.

1 investor

REDi provides debit, credit, and prepaid card fraud prevention and detection solutions for community banks and credit unions. It serves more than 100 financial institutions across the United States.

1 investor